if __name__ == '__main__':
    a = 123
    b = 456
    c = 789

    # 传统风格写法
    if (a == b) & (b == c) & (c == a):
        print(True)

    # Python 风格代码
    if a == b == c:
        print(True)

    m = "abc"
    n = "abc"

    print(m.__eq__(n))